The 1219E-18AC from ACST GmbH is a Frequency Multiplier with Input Frequency 12.22 to 18.33 GHz, Output Frequency 220 to 330 GHz, Input Power 0 to 5 dBm, Output Power 2 to 7 dBm, VSWR 1.80:1. Tags: Waveguide, Waveguide Multiplier. More details for 1219E-18AC can be seen below.